Disk furrow-opener.



F. R. PAGKHAM.

DISK' FURROW OPENER.

APPLIOATION FILED ooT.11, 1912.

1 1 07,44% llPaLtzenized Aug. 18, 1914.

akmus/1;,

TH NORRIS PETER'S D0.. Fuomilnv., WASHINGTON. IJA C.

UNITED STATES FATEN T GEIQ.

FRANK R. PACKHALM, OF SPRING-FIELD, OHIO', ASSIGrNOR T0 THE AMERICANSEEDING MACHINE COMPANY, OF SRINGFIELD, OHIO, A. CORPORATION OF OHIO.

DISK FURROIV-OPENER.

ademas.

Application led October 11, 1912.

To all whom t may concern Be it known that I, FRANK R. PAcKHAu, acitizen of the United States, residing at Springfield, in the county ofClark and State of Ohio, have invented certain new and usefulImprovements in Disk Furrow-Openers, of which the following is aspecification.

This invention relates to improvements in disk furrow-openers forseeding machines; the invention relating more particularly to afurrow-opener which employs a shield or scraper for the disk.

The object of the invention is to provide a construction in which theshield or scraper may be readily adjusted to its proper position againstthe face of the disk; also to provide an adjustment requiring a minimumnumber of parts; and also to provide a construction which will allow theparts of the furrow-opener to be more readily and easily assembled.

In the accompanying drawings, Figure 1 is the side elevation of afurrow-opening device embodying the improvements. Fig. 2 is a section onthe line 2 2 of Fig. l. Fig. 3 is a section on line 3-3 of Fig. 2.

Like parts are indicated by similar reference characters in the severalviews.

It has been common to form the support proper in two parts, one partcarrying the disk and the other part the boot, and shield or scraper,and means are provided for adjusting these parts relatively to eachother in order to cause the shield or scraper to conform itself properlyto the convex side of the disk. Difficulty, however, has been eX-perienced in adjusting the two-part support in this prior device and inorder to make the adjustment more easy and effective I have devised thefollowing construction.

The disk, represented by 1, is of the usual concave-convex formrotatably connected to one of the parts 2 of the support by the bolt 2ain any suitable manner; the usual dragbar 3 being connected to theforward part of said support 2. The boot is represented by 4: and has aforwardly projecting arm 5 which forms the other part of the mainsupport. Connected in this case to the toe of the boot is a scraper 6 ofa well-known construction shaped to conform itself to the conveX side ofthe disk and with its forwardscraping edge formed on the arc of acircle.

Formed integrally with the supporting part 2 and projecting from theupper rear Specification of Letters Patent.

Patented Aug. 18, 1914-..

Serial No. 725,201.

edge thereof is a cone-shaped socket 7. Formed integrally with'thesupporting part 5 and projecting from the forward upper edge thereof isa tapered perforatedvtrunmon 8, fitted to the socket 7. Projectingrearwardly through the tapered trunnion 8 is a bolt 9 having on its rearscrew-threaded end a nut 10 which lies in a recess 11 in the supportingpart 5, and so formed as to'prevent the nut from turning.

By the co-nstruction thus far described it will be seen that the forwardedge of the blade 10 may be brought in proper yposition coincident tothe disk by revolving the taperedspindle 8 within the tapered socket 7,and by then tightening the nut 10, by turning the bolt, the parts may beheld in proper rela-tive positions to each other. Ars an additionalsafe-guard, however, against the movement of the parts of the supportwith respect to each other after the proper adjustment is made, there isinserted in the part 2 adjacent to the socket thereof a setscrew 12,which, after the adjustment is made, may be brought to bear against thewing 18 projecting from the part 5, thus making it impossible for thepart 2, which carries the conduit and scraper, to move outwardly awayfrom the disk; the disk preventing the scraper and boot from movingbeyond certain limitations in the opposite direction.

The aXis upon which thel tapered spindle S turns is indicated by thebroken line aa and is substantially parallel to a line drawn from theeXtreme lower and upper points of contact of the scraping edge of thescraper with the disk, as indicated by the broken line 6 5. Thus it willbe seen that in adjusting the parts, all portions of the scraping edgeof the scraper must move to their true position against the disk andthat this adjustment is a positive one which may be very easily andreadily made; also thatthe construction is such that the parts will bepositively retained in their adjusted position, since, even though thebolt should work loose, the supporting member which carries the boot andscraper will still be heldin its adjusted position by the set-screw anddisk.

I'Iaving thus described my invention I claim l. In a disk furrow opener,a support, a

disk mounted on said support, a boot projecting downwardly having a toe,a

scraper projecting from the toe of said boot, the said hoot, toe pieceand scraper lying in a vertical plane such that the scraper willnormally Contact against the disk, a swiveled connection between theboot and the support located at a point above the scraper for permittinga lateral adjustment of said boot and scraper consisting of a spindle onone of said parts and a socket to receive said spindle on the otherpart, together with means for positively drawing said bootand saidsupport together to fasten same, While maintaining the lateraladjustment of said hoot and scraper to said disk, substantially asspecified. u

2. In a disk furrow opener, a two-part support, a shield or scrapermounted on one of said parts and a concavo-,convex disk on the other ofsaidparts, a spindle on one of said parts and a socket Aon the otherof'said parts to receive said spindle, together With means for holdingsaid spindle in said socket, and an adjustable stop on one of said partsadapted to engage the other of said parts to prevent rotation of saidspindle in said socket.

In testimony whereof, I have hereunto set my hand this 5th day ofOctober 1912.

l FRANK R. PACKHAM. Witnesses R. H. Kirn, CLYDE BROWN.

`(Jellies. of tili'iz.Y :patenti may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

